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EP0017130B1 - Récepteur pour ondes électromagnétiques à haute fréquence avec réajustement des fréquences - Google Patents

Récepteur pour ondes électromagnétiques à haute fréquence avec réajustement des fréquences Download PDF

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Publication number
EP0017130B1
EP0017130B1 EP80101553A EP80101553A EP0017130B1 EP 0017130 B1 EP0017130 B1 EP 0017130B1 EP 80101553 A EP80101553 A EP 80101553A EP 80101553 A EP80101553 A EP 80101553A EP 0017130 B1 EP0017130 B1 EP 0017130B1
Authority
EP
European Patent Office
Prior art keywords
phase
frequency
receiver
oscillator
loop
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80101553A
Other languages
German (de)
English (en)
Other versions
EP0017130A1 (fr
Inventor
Egmont Ing. Grad. Gabler
Uwe Dipl.-Ing. Lehmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6067211&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0017130(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT80101553T priority Critical patent/ATE2373T1/de
Publication of EP0017130A1 publication Critical patent/EP0017130A1/fr
Application granted granted Critical
Publication of EP0017130B1 publication Critical patent/EP0017130B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
    • H04L27/2272—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals using phase locked loops
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop

Definitions

  • the invention relates to a receiver for high-frequency electromagnetic vibrations with a frequency readjustment, which contains a voltage-controlled oscillator, wherein a phase-locked loop (PLL: Phase-Looked Loop) is switched on for the recovery of the carrier in the signal path of the receiver, with a device for carrier recovery, a phase-locked oscillator (PLL oscillator) and a phase detector to which the output signal of the carrier recovery and the oscillations of the PLL oscillator are fed as a reference signal and whose phase-controlled output signal (carrier) is fed to the frequency control loop.
  • PLL Phase-Looked Loop
  • a frequency discriminator can be provided in the negative feedback branch.
  • a voltage-controlled oscillator e.g. the local oscillator of a converter. feeds.
  • the invention is based on the object of designing a receiver for high-frequency electromagnetic vibrations with a frequency readjustment such that control errors are avoided and the control loop is caught even when broadband signals are received.
  • phase-locked loop can be used directly as a frequency discriminator for a frequency-locked loop (AFC loop).
  • the receiver in particular a PSK receiver, consists of a reception mixer 1, to which the reception signal (RF signal) and the vibrations of a local oscillator 2 are fed.
  • a circuit 3 for carrier recovery, a phase detector 4 and a filter (PLL loop filter) are switched on in the order mentioned in the signal path of the receiver (IF level).
  • the frequency control loop AFC leads from the output of the PLL loop filter via a filter (AFC loop filter) and a control amplifier to the local oscillator 2, which is connected to the reception mixer 1.
  • AFC loop filter also connected to the output of the PLL loop filter is a PLL oscillator 6 belonging to the phase locked loop (PLL loop), which is connected to the phase discriminator 4 and the actual demodulator part, the second input of which is connected to the output of the reception mixer 1.
  • Digital data (PSK signals) can be taken from the output of the demodulator part 9 (represented by the arrows).
  • the recovered carrier is usually fed into a phase locked loop (PLL loop) in a PSK receiver in order to limit the phase noise bandwidth with the aid of the loop filter.
  • PLL loop phase locked loop
  • the signal from the PLL oscillator 6 serves as the output signal, which represents an exact image of the recovered carrier within the loop filter bandwidth.
  • the reference obtained here is only then fed to the actual demodulator part 9, so that the phase information can be obtained by comparison with the modulated input signal.
  • Parts like the phase discriminators of carrier recovery and demodulators can also be identical.
  • the oscillator frequency f o of the PLL oscillator 6 is exactly the same as the input frequency f E at the input of the phase detector 4 and thus the voltage U at the PLL oscillator is a measure of the input frequency according to the characteristic curve of the PLL oscillator 6.
  • the phase locked loop acts as a frequency discriminator and is connected to the frequency control loop (AFC loop).
  • AFC loop frequency control loop
  • the frequency control loop sets the most favorable operating point for the phase locked loop, which is given at a voltage of almost 0 V at the phase discriminator output. This is f especially in PSK demodulators because of the high burden of the loop Sugur forungsver Ahren important.
  • Fig. 2 shows the block diagram of a receiver, which corresponds in its basic structure to the receiver according to Fig. 1 and in which the same elements or components are provided with the same reference numerals.
  • the possibilities according to the invention for coupling in an external wobble voltage U w are provided in this receiver, by means of which the control loops are caught.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Burglar Alarm Systems (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Claims (4)

1. Récepteur pour des ondes électromagnétiques à haute fréquence avec réajustement des fréquences, qui comporte un oscillateur commandé en.tension (2), une boucle de régulation de phase (4, 5, 6) (PLL : phase Locked Loop) pour la régénération de la porteuse étant insérée dans le trajet de signaux du récepteur, boucle qui comporte un dispositif (3) pour la régénération de la porteuse, un oscillateur rigide en phase (oscillateur PLL) (6), et un détecteur de phase (4) auquel sont appliqués le signal de sortie de régénération de la porteuse et les oscillations de l'oscillateur (PLL) en tant que signal de référence, et dont le signal de sortie régulé en phase (porteuse) (U) est appliqué à la boucle de régulation de fréquences (1-5, 7, 8, 2), caractérisé par le fait que l'accrochage des boucles de régulation de fréquence et de phase a lieu par introduction d'une tension de wobulation externe (Uw).
2. Récepteur suivant la revendication 1, caractérisé par le fait que l'introduction de la tension de wobulation (Uw) a lieu dans la boucle de régulation de phase (4, 5, 6).
3. Récepteur suivant la revendication 1, caractérisé par le fait que l'introduction de la tension de wobulation (Uw) a lieu dans la boucle de régulation de fréquence (1-5, 7, 8, 2).
4. Récepteur suivant l'une des revendications précédentes, caractérisé par le fait que le signal démodulé est prélevé sur un détecteur synchrone distinct (9).
EP80101553A 1979-04-02 1980-03-24 Récepteur pour ondes électromagnétiques à haute fréquence avec réajustement des fréquences Expired EP0017130B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80101553T ATE2373T1 (de) 1979-04-02 1980-03-24 Empfaenger fuer hochfrequente elektromagnetische schwingungen mit einer frequenznachregelung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2913172 1979-04-02
DE2913172A DE2913172B2 (de) 1979-04-02 1979-04-02 Empfänger für hochfrequente elektromagneitsche Schwingungen mit einer Frequenznachregelung

Publications (2)

Publication Number Publication Date
EP0017130A1 EP0017130A1 (fr) 1980-10-15
EP0017130B1 true EP0017130B1 (fr) 1983-01-26

Family

ID=6067211

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101553A Expired EP0017130B1 (fr) 1979-04-02 1980-03-24 Récepteur pour ondes électromagnétiques à haute fréquence avec réajustement des fréquences

Country Status (5)

Country Link
US (1) US4313219A (fr)
EP (1) EP0017130B1 (fr)
JP (1) JPS55134532A (fr)
AT (1) ATE2373T1 (fr)
DE (2) DE2913172B2 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3114063A1 (de) * 1981-04-07 1982-10-21 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Empfangssystem
FR2525055A1 (fr) * 1982-04-09 1983-10-14 Trt Telecom Radio Electr Procede de correction de frequence de la porteuse locale dans le recepteur d'un systeme de transmission de donnees et recepteur utilisant ce procede
US4527127A (en) * 1982-06-30 1985-07-02 Motorola Inc. Frequency acquisition circuit for phase locked loop
US4594727A (en) * 1983-01-05 1986-06-10 Universal Data Systems Synchronous receiver
JPS60203045A (ja) * 1984-03-28 1985-10-14 Nec Corp 位相同期検波復調器
JPS61177054A (ja) * 1985-01-31 1986-08-08 Alps Electric Co Ltd 位相変調信号の受信回路
EP0305602B1 (fr) * 1987-09-03 1993-03-17 Koninklijke Philips Electronics N.V. Récepteur à deux branches
US5109532A (en) * 1990-01-30 1992-04-28 General Instrument Corporation Elimination of phase noise and drift incident to up and down conversion in a broadcast communication system
WO2003013011A1 (fr) * 2001-07-30 2003-02-13 Tadao Sugita Appareil reducteur de bruit
CN102960238A (zh) * 2012-12-03 2013-03-13 陈启康 粮饲兼用甜秆水稻新品种选育方法
FR3085568B1 (fr) * 2018-08-31 2020-08-07 Zodiac Data Systems Procede de datation de signaux de telemesure

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE860370C (de) * 1943-02-04 1952-12-22 Telefunken Gmbh Einrichtung zur selbsttaetigen genauen Nachstellung der Zwischenfrequenz eines UEberlagerungsempfaengers
DE1122110B (de) * 1958-03-20 1962-01-18 Nippon Electric Co Empfangssystem fuer frequenz- oder phasenmodulierte Schwingungen
DE1466222C3 (de) * 1965-10-20 1974-03-21 C.Plath Gmbh Nautisch-Elektronische Technik, 2000 Hamburg Verfahren zur Erhöhung der Einstellgenauigkeit eines Überlagerungsempfängers mit digitaler Anzeige
US3525945A (en) * 1968-08-14 1970-08-25 Communications Satellite Corp System for reconstituting a carrier reference signal using a switchable phase lock loop
US3878527A (en) * 1970-10-07 1975-04-15 Itt Radiant energy receiver circuits
US3789302A (en) * 1972-03-31 1974-01-29 Microwave Ass Inc Fm heterodyne transmitter
JPS5075759A (fr) * 1973-11-06 1975-06-21
JPS5177058A (fr) * 1974-12-27 1976-07-03 Fujitsu Ltd

Also Published As

Publication number Publication date
ATE2373T1 (de) 1983-02-15
JPS55134532A (en) 1980-10-20
DE3061730D1 (en) 1983-03-03
DE2913172A1 (de) 1980-10-09
DE2913172B2 (de) 1981-06-11
EP0017130A1 (fr) 1980-10-15
US4313219A (en) 1982-01-26

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